In volume 1, the selections from Epic are from Homer's Iliad and Odyssey, and Vergil's Aeneid. Important characters include: Achilles, Hector, Patroclus, Odysseus, Penelope, Aeneas, Dido. An important theme is the Trojan War.
In volume 2, the five Greek tragedies are: Euripides, Iphigenia at Aulis; Euripides, Trojan Women; Sophocles, Antigone; Sophocles, Women of Trachis; Euripides, Hippolytus.
A successful design should find stock art that are illustrative of the contents. Ancient Greek pottery or sculpture might provide a good source.